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P2H56B Weasel standing upright, Mustela nivalis, Germany

This week鈥檚 new questions

Why do many animals have white underbellies? And why do some pieces of music give us goosebumps?

Close-up of construction bubble level.

What does the angle of a spirit level mean relative to Earth?

Coronal mass ejection 05/11/2018 3372 views 12 likes 402495 ID Like Download COOKIES To enable the sharing functionality, please accept all cookies. To adjust your cookie settings, click here. Details Related This image, acquired by the LASCO C2 coronagraph instrument on the ESA-NASA SOHO spacecraft, was taken 8 January 2002 and shows a widely spreading coronal mass ejection (CME) as it blasts more than a billion tons of matter out into space at millions of kilometers per hour. This C2 image was turned 90 degrees so that the blast seems to be pointing down. A second image, from the EIT disk imager on a different day was enlarged and superimposed on the C2 image so that it filled the occulting disk for effect. CREDIT ESA/NASA/Soho

Would a powerful solar storm knock out electronics in planes?

2FWP497 Liquid iron molten metal pouring from ladle container into mold, industrial metallurgical factory, foundry cast, heavy industry background.

Is it possible to have a high-tech society without iron? Part 2

This week鈥檚 new questions

Close up of a spinning globe on black; Shutterstock ID 22230961; purchase_order: -; job: -; client: -; other: -

Does life require Earth鈥檚 rate of rotation to lie in a certain range?

Spaceman walks on the red planet Mars. Space Mission. Astronaut travel in space; Shutterstock ID 532139260; purchase_order: -; job: -; client: -; other: -

Should we genetically modify humans we send to Mars? Part 2

In late summer sunflower ripened on the farm field; Shutterstock ID 1883406451; purchase_order: -; job: -; client: -; other: -

This week鈥檚 new questions

2FWP497 Liquid iron molten metal pouring from ladle container into mold, industrial metallurgical factory, foundry cast, heavy industry background.

Could there be an advanced technological society without iron?

Cosmonaut in a futuristic dystopian city . Sci fi and virtual reality concept . This is a 3d render illustration . ; Shutterstock ID 2230705453; purchase_order: -; job: -; client: -; other: -

What happens to our electronic cloud records when we die?

One reader takes this question on, highlighting how important it is that we consider our digital legacies in our wills

This week鈥檚 new questions

If humans needed to hibernate, how would civilisation have developed?

Could two three-dimensional images create a four-dimensional one?

There are good and bad bacteria, but are there good viruses? Part 2